CN-224207614-U - Composite electrostatic cotton filter material

Abstract

The utility model provides a composite electrostatic cotton filter material which comprises a gradient pre-filter layer, an electrostatic filter layer and a reinforcing layer which are sequentially arranged, wherein the electrostatic filter layer is in a sine wave shape, an outer supporting layer is arranged between the gradient pre-filter layer and the electrostatic filter layer, an inner supporting layer is arranged between the gradient pre-filter layer and the reinforcing layer, one sides of the outer supporting layer and one side of the inner supporting layer, which are close to the electrostatic filter layer, are in a sine wave shape matched with the electrostatic filter layer.

Inventors

• LI JIACHENG
• LIU FEI
• FU YONGLI
• GAO JINGHAO

Assignees

• 河南省安克林滤业有限公司

Dates

Publication Date

20260508

Application Date

20250528

Claims (8)

1. 1. The composite electrostatic cotton filter material is characterized by comprising a gradient pre-filter layer, an electrostatic filter layer and a reinforcing layer which are sequentially arranged; The static filter layer is sine wave-shaped, an outer supporting layer is arranged between the gradient pre-filter layer and the static filter layer, an inner supporting layer is arranged between the gradient pre-filter layer and the reinforcing layer, and one sides, close to the static filter layer, of the outer supporting layer and the inner supporting layer are sine wave-shaped matched with the static filter layer.
2. 2. The composite electrostatic cotton filter material of claim 1, wherein the outer support layer and the inner support layer are uniformly provided with support channels, and activated carbon is filled in the support channels.
3. 3. The composite electrostatic cotton filter material according to claim 1, wherein the gradient pre-filter layer comprises a first pre-filter layer and a second pre-filter layer, the first pre-filter layer has a pore diameter of 50 μm and a thickness of 1-2 mm, and the second pre-filter layer has a pore diameter of 30 μm and a thickness of 1-2 mm.
4. 4. The composite electrostatic cotton filter material of claim 3, wherein the acid-base resistant layer is disposed on a side of the first pre-filter layer facing away from the second pre-filter layer, and the acid-base resistant layer is a polytetrafluoroethylene filter membrane.
5. 5. The composite electrostatic cotton filter material of claim 1, wherein the electrostatic filter layer is electrostatic cotton, and has a pore diameter of 20-30 μm and a thickness of 1-3 mm.
6. 6. The composite electrostatic cotton filter medium of claim 1, wherein the reinforcing layer is a PET mesh cloth, and the thickness of the reinforcing layer is 1mm.
7. 7. The composite electrostatic cotton filter material of claim 6, wherein the reinforcing layer is provided with a graphene coating, and the thickness of the graphene coating is 0.1mm.
8. 8. The composite electrostatic cotton filter material of claim 1, wherein the reinforcing layer is provided with a skin-friendly layer on one side facing away from the gradient pre-filter layer, and the thickness of the skin-friendly layer is 0.1-0.2 mm.

Description

Composite electrostatic cotton filter material Technical Field The utility model belongs to the technical field of filter materials, and particularly relates to a composite electrostatic cotton filter material. Background The cotton filter material is used in respiratory protection articles, and mainly uses its special material and structure to intercept the impurities, dust, bacteria and other particles in the air so as to purify the air. In the prior art, chinese patent literature with the authority bulletin number of CN211536869U discloses a composite electrostatic cotton filter material, which comprises a first PP non-woven fabric layer, a charged fiber cotton layer and a second PP non-woven fabric layer, wherein uniform rolling points are arranged on the surface of the first PP non-woven fabric layer, the top of the charged fiber cotton layer is covered with the first PP non-woven fabric layer, and the bottom of the charged fiber layer is covered with the second PP non-woven fabric layer, but the area of the charged fiber cotton layer is limited by the area of the cotton filter material, and the electrostatic adsorption capacity of dust is limited. Therefore, it is necessary to design a composite electrostatic cotton filter material for increasing the electrostatic adsorption area and improving the electrostatic adsorption capacity of dust to solve the technical problems faced at present. Disclosure of Invention Aiming at the defects existing in the prior art, the utility model provides a composite electrostatic cotton filter material which increases the electrostatic adsorption area and improves the electrostatic adsorption capacity of dust. The technical scheme includes that the composite electrostatic cotton filter material comprises a gradient pre-filter layer, an electrostatic filter layer and a reinforcing layer which are sequentially arranged, wherein the electrostatic filter layer is in a sine waveform, an outer supporting layer is arranged between the gradient pre-filter layer and the electrostatic filter layer, an inner supporting layer is arranged between the gradient pre-filter layer and the reinforcing layer, and one sides, close to the electrostatic filter layer, of the outer supporting layer and the inner supporting layer are both in a sine waveform matched with the electrostatic filter layer. Further, support pore channels are uniformly formed in the outer support layer and the inner support layer, and activated carbon is filled in the support pore channels. Further, the gradient pre-filtering layer is provided with a first pre-filtering layer and a second pre-filtering layer, wherein the aperture of the first pre-filtering layer is 50 mu m, the thickness of the first pre-filtering layer is 1-2 mm, the aperture of the second pre-filtering layer is 30 mu m, and the thickness of the second pre-filtering layer is 1-2 mm. Further, an acid and alkali resistant layer is arranged on one side, away from the second pre-filtering layer, of the first pre-filtering layer, and the acid and alkali resistant layer is a polytetrafluoroethylene filtering membrane. Further, the electrostatic filter layer is made of electrostatic cotton, the aperture of the electrostatic filter layer is 20-30 mu m, and the thickness of the electrostatic filter layer is 1-3 mm. Further, the reinforcing layer is PET mesh cloth, and the thickness of the reinforcing layer is 1mm. Further, a graphene coating is arranged on the reinforcing layer, and the thickness of the graphene coating is 0.1mm. Further, a skin-friendly layer is arranged on one side, away from the gradient pre-filtering layer, of the reinforcing layer, and the thickness of the skin-friendly layer is 0.1-0.2 mm. The utility model has the beneficial effects that: (1) According to the utility model, the filter area of the electrostatic filter layer in the unit filter material area can be increased by the electrostatic filter layer in the sine wave shape, the electrostatic adsorption area is increased, and the electrostatic adsorption capacity of dust is improved; (2) The outer supporting layer and one side of the inner supporting layer, which is close to the electrostatic filtering layer, are sinusoidal waveforms matched with the electrostatic filtering layer, and the outer supporting layer and the inner supporting layer support the electrostatic filtering layer on two sides of the electrostatic filtering layer, so that the electrostatic filtering layer is kept sinusoidal waveforms, and stable and large electrostatic adsorption area is ensured. Drawings Fig. 1 is a schematic structural diagram of a composite electrostatic cotton filter according to the present utility model. FIG. 2 is a schematic diagram of the structure of a gradient pre-filter layer of the present utility model. Detailed Description Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. The description of the exem